Precious stone



FIG. 1 is a perspective view of the precious stone showing its newdesign;

FIG. 2 is a side view of the precious stone shown in FIG. 1;

FIG. 3 is a top view of the precious stone shown in FIG. 1; and,

FIG. 4 is a bottom view of the precious stone shown in FIG. 1.

The ornamental design for a precious stone, as shown and described.